centos man page for mmv_lookup_value_desc

MMV_LOOKUP_VALUE_DESC(3)				     Library Functions Manual					  MMV_LOOKUP_VALUE_DESC(3)

NAME
       mmv_lookup_value_desc - find a value in the Memory Mapped Value file

C SYNOPSIS
       #include <pcp/pmapi.h>
       #include <pcp/mmv_stats.h>

       pmAtomValue *mmv_lookup_value_desc(void *addr, const char *metric, const char *inst);

       cc ... -lpcp_mmv -lpcp

DESCRIPTION
       mmv_lookup_value_desc  searches	for  the  value  of the instance identified by the external instance name inst of the metric metric in the
       MMV(5) file.  addr is the address returned from mmv_stats_init().

       The pointer returned points to a pmAtomValue union, which is defined as follows:

	   typedef union {
	       __int32_t   l;	   /* 32-bit signed */
	       __uint32_t  ul;	   /* 32-bit unsigned */
	       __int64_t   ll;	   /* 64-bit signed */
	       __uint64_t  ull;    /* 64-bit unsigned */
	       float	   f;	   /* 32-bit floating point */
	       double	   d;	   /* 64-bit floating point */
	       char	    *cp;   /* char ptr */
	    pmValueBlock *vbp;	/* pmValueBlock ptr */
	   } pmAtomValue;

       MMV string values should be set using either of the mmv_set_string or mmv_set_strlen routines.

RETURNS
       The function returns the address inside of the memory mapped region on success or NULL on failure.

SEE ALSO
       mmv_stats_init(3), mmv_inc_value(3) and mmv(5).

Performance Co-Pilot													  MMV_LOOKUP_VALUE_DESC(3)